Improvement in machines for making and cutting paper tubes



M, P. WILSON." I Machine for Making and Cutting Paper-Tubes.

Patented July 1, 1879.

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UNIT STATES PA ENT QFFICEL V MERRIOK WILSON, orcnioneo, ASSIGNOR TO oHAELEs R. STEELE AND V OLARENGE PRICE, OF WAUKEGAN, ILLINOIS, ONEFOURTH TO EACH.

" IMPROVEMENT IN MACHINES FOR MAKING AND CUTTING PAPER TUBES.;'.

Specification forming part of Letters Patent No. 2 [7,035, dated J uly 1,'1S79 application filed April 18, 1879. i

verse section of the same, taken on the lineX Xt, Fig. 1; and Fig. 3, an end elevation there- 0 My improvement relates to machines for forming paper tubes or mandrels, and then cutting them transversely, being especially adapted to the preparation of shortpaper cylin ders for paper boxes;

' The invention consists in a device for changing the speed of the mandrel connected to the sliding frame which bears the cutters, whereby when thelatter are moved forward against the tube the revolution of the mandrel is increased.

It also consists in a swinging or removable center bearingfor the outer end of the mandrel,

whereby the mandrel is supported at both ends, butiat the same time the sections of the tube can be removed therefrom after cutting.

It also consists in two separate adjustable frames mounted on the main frame, on oppo- -site sides of the mandrel, and securedthereto by single slots and bolts.

It also consists in special combinations of devices, all of which will be hereinafter more fully described, and pointed ,out distinctly in the claims.

In the drawings, A represents the main supporting-frame of the machine, and B the man drel, which is of ordinary construction, and is mounted at its inner end in the usual way. In machines of this kind this mandrel has heretofore been supported at its inner end alone, and there has consequently been an unsteadiness and unevenness in its revolution, which made it more or less difficult to construct perfect cylinders. I provide a center bearing for the outer end as well as the inner, thereby giving steadiness to the motion of the mandrel. This I obtain by means of a swinging frame or arm, (3, which is pivoted to the main frame at one side of the outer end of the mandrel. In the outer end of this piece is secured in any suitable manner a centernn, i), so arranged that when 'the piece is swung up against the endof the mandrel it will be. directly in line with the hearing at the other end of i the mandrel. The outer end of thismandrel-is, of course,'provided with a suitable bearing for the pin, so that it will be held in position and revolve thereon. The swinging arm is also provided with a hand-lever, E, pivoted thereto so as to vibrate vertically, and an upright stop-post, F, is attached to the main frame on posite to the pivot of the piece 0. Wherrthe center-pinis swung up against the end of the mandrelthe lever E is thrown down and'passes behind this post, as shown in Fig. 3 of the drawings, and by this means'the pin is held firmly to the mandrel as long as required.

The devices and means for rolling the paper upon the mandrel to form the tube are such as are in ordinary use,'and require no description. j

The frames on opposite sides of the mandrel, however. are constructed and secured to the main frame in a somewhat novel manner. The tableframe G is an independent frame, and arranged to be moved back and forth thereon to and from the mandrel. It is supported on suitableways to permit this move ment, and is secured to the main frame by a single bolt, H, which passes down through a single slot, at, in the bed of the main frame,

being secured by a nut on this lower end. The slot and bolt are arranged about mid way of the a length of the table-frame G, and it is evident that the adjustment of this table may be made with great ease by simply loosening a single bolt. The end ways g, on which the ends of the frame move back and forth, support the bottom of the frame a little above the bed of the main frame, and just inside of them are guides 9', attached to the table-frame, by which device the movement of the frame is always guided in right lines.

On the opposite side of the mandrel is a somewhat similar frame, I, which is secured to the bed of the main frame by a single bolt, J, and passing through a similar slot, to, in

the bed-plate.v The end wayst' and the guides.

i are also arranged in the same way as described above. On this frame is mounted the horizontal sliding frame K, which carries the cutters for dividing the tube transversely whe formed on the mandrel.

This device may be of any ordinary construction and will be readily understood without description.

Now, While the paper is being wound upon the mandrel the movement should be somewhatslower and steadier than when the cutting is done, for the more quickly the latter operation can be performed the cleaner will be the cut, and at the same time there will be a saving of time. I have therefore devised means for increasing; the speed of the mandrel at the moment the cutting is performed.

on the driving end of the mandrel a conical pulley, L, is mounted on the shaft of the mandrel, and above it is arranged a similar pulley, M, which is fastened to the driving-pulley. A hand, N, passes from one of these conical pulleys to the other.

A shifting-lever, O, is pivoted to a suitable support on the main frame at the inner end of the cutting-table, being provided with a fork, 0, at its outer end, which embraces the pulleyband, so asv to shift it back and forth on the pulleys in a Way well known.

An arm, P, is secured to the lever O, and mounted on the pivot of the latter. This arm extends back of and over the cutter-frame, and is provided with a slot, 19, in its outer end.

A link, Q, is pivoted at one end to a post on the cutter-frame, and at the other end to a pivot-pin, g, which is secured in the slot of the lever-arm P, so as to be adjusted back and forth therein.

The link may also'be made in two sections, fastened together by a bolt, R, passing through slots in one or more of the sect-ions, so that the length of the link may beadjusted as occasion may require. These parts are all constructed and arranged so that when the cutter-frame is moved up toward the mandrel in the usual way the band on the conical pulleys will be shifted toward the large end of the upper one and the small end of the lower one,

thereby increasing the speed of the mandrel, and vice versa, and thus the revolution of the paper tube is increased by automatic means just at the time of the cutting.

The tube having been formed on the main drel and divided by cutters in the usual way, the lever on the swinging piece 0 is raised, and the piece swung outward, as shown in Fig. 1 of the drawings, when it is evident that there is no obstacle to the removal of the tubesections by slipping them from the outer end 0f the mandrel as usual.

The provisions for the several adjustments of differentdevices in the machine, as described above, adapts the machine to the formation of tubes of different sizes.

Some parts of mechanism herein shown and described may be changed somewhat in construction, and I do not limit myself to the precise devices herein described for moving the bearing at the outer end of the mandrel, or for changing the speed ofthe mandrel. The latter can evidently be performed by suitable change speed-gearin g, as well as with the pulleys mentioned, and some other devices may be used to effect the change either with pulleys or gearing. 7

Now, then, having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is'

1. The mandrel B, provided witha center socket-bearing at its outer end, in combination with the pivoted swinging support 0 and the center-pin D, mounted on the support, substantially as and for the purpose set forth.

2. The mandrel B, in combination with the swinging support G, center-pin l), lever E, and stop F, substantially as described.

3. In a machine for forming and cutting paper tubes, the sliding cutter-frame K, in. combination with changeable speed devices for driving the mandrel and mechanism for connecting the speed changing devices with the cutter-frame, whereby the speed at which. the mandrel is driven is controlled by the attendant by simply moving the said cutterframe, and the mandrel is driven temporarily more rapidly at the time of cutting, substan-. tially as described.

4. Mandrel B, in combination with the con-. ical pulleys L and M, band N, sliding cutterframe K, and shifting-lever O P, connected to the cutter-frame by a pivot-link, substantially as and for the purpose set forth.

MERRIOK F. wiLson.

Witnesses L. A. BUNTINa, JNo. O. MACGREGOR. 

